Water Pump Replacement RB25/R33

[frozenwaffles]

i left that one bolt out, its smaller, M4 or 5 i think, not M6 or 8. has never leaked at all.

[chocky]

Yesterday i used a rb30 powermax pump wp898 it bolted up to my 20 fine, exact fit

[sneaky1]

problem with the rb30 pumps is that they are not used to the rpm that the 20/25's make. remember the rb30 revs to loke 5.5k. my old 25 had a limiter of 8.5k.

the shaft the connects the fan to the bearings is smaller on the rb30 compared to the rb20/25 etc. thats cause that shaft brakes and sends your fan into your radiator and screws the lot. and yes that 1 bolt hole. other than that the price is heaps diff.

its your choice do you take your chance or not??

[frozenwaffles]

hmmm re the above quote, i dont think they really factory in RPM to the water muchs quite as much as you say....i mean i could be wrong but i dont think they choos the bearings for a water pump based on rpm...they might but i doubt it.

anyway my rb30 pump has not looked back one iota from day one...

you know what, if i did the water pump again i would buy a genuine one, but looking back, my protex one had not missed a beat or leaked one mL of water/coolant

[Luke_ENR34]

I got my 100k service down. GO GENUINE PUMP. I brought a "powermax" one and after a couple of days of driving it blew the seal on the water pump. This was months ago and im still trying to get my money back from "Powermax".

Genuine Nissan is working fine. Dont waste your money on the dodgy "powermax" ones, which will just end up costing u more money in the long run.

[driftmeister]

Just changed mine yesterday, in Malaysia they sell the Paraut brand only as replacement water pumps for the RB engines. It fits the RB20/25 since it has the 1 elongated hole to match both. This is my 2nd unit as the 1st one lasted more than 3 years with 100k mileage of city and frequent weekend blast.

Hope the link will give you guys an alternative unit to buy. Btw Im driving a modded R34GTT

http://www.tanzawa.or.jp/~paraut/page02/page021.html

[Harl33y]

hey if you live in Perth & want a water pump to suit an RB25 then send me a message I can get you 1 for bout $50 or so. I work in Morley & the guys down the road give me a lot of trade discounts

[R32_Damo]

I got my 100k service down. GO GENUINE PUMP. I brought a "powermax" one and after a couple of days of driving it blew the seal on the water pump. This was months ago and im still trying to get my money back from "Powermax".

Genuine Nissan is working fine. Dont waste your money on the dodgy "powermax" ones, which will just end up costing u more money in the long run.

igging up old thread.. but meh....

Dude too true mate, needed a w/p asap last week so i rang local parts shop got powermax RB water pump, then had so many dramas finding dodgie stuff, dodge top hose out let, broken radiator ect finaly got it back on rd only to have this cheap branded pump drop a seal in my drive way tonight, doesnt even hold water at all now, do it all over AGIAN.

All i can say is, dont trust after market crap, GENUINE only...

[FordyR31]

More old threads relavent to my questions.

I am ready to have my water pump replaced on a 25DET S2. I was 99% sure that 32 GTR pump was used when it was last done but after phoning around, some respectable places are saying it won't fit. The car is used for the odd short drive to keep going, some club events/cruises and some track days, probably 2-3 per year at ts stage. Would the 25det pump be the way to go? Its about $50 more expensive than the 32 GTR part I already had. I will be buying genuine Nissan parts.

Thanks for any help.

[iseekool]

Sorry to bring back an old post.

So will the N1 water pump fit up to an RB25DET NEO engine with no mods?

I have an R34.

[SargeRX8]

Its best to get the correct pump. I am not sure about that one. Don't get the wrong unit as you'll be without a car until you get the correct pump. 2009 thread!

Edited August 11, 2014 by SargeRX8

[aznoz]

Since someone has already dug up this thread, may as well post in here.

Is it necessary to replace the water pump with the timing belt at a major service?

Gonna replace my timing belt soon and noticed there are a few "major service" kits out there with a timing belt and water pump.

[Ben C34]

No . But if you don't want to have to pull the timing belt off at a later date do it now. Also do the camshaft seals.

[aznoz]

So how often should you change the water pump?

Or do you just wait for it to go?

[Piggaz]

They're cheap enough. Buy a new one while it's all apart and do it. Piece of mind is worth it in itself.

[Ben C34]

So how often should you change the water pump?

Or do you just wait for it to go?

Like I said, you have to take the timing belt off to replace it. It's not exactly a fun job.

Like piggas said they don't cost much, so why wouldn't you do it at the same time as the belt?

[SargeRX8]

The second time I did this service on my car, 20 minutes and I was already putting everything back together. I still think the biggest pain in the ass is getting the harmonic balancer off.

[Ben C34]

It doesn't take long correct, but why stuff around and do it all twice when you could just do it all at the same time. A water pump is cheap. It's not like they are hundreds of dollars.

[89CAL]

Yes, just do it, then you shouldnt have to worry about anything for another 100,000km, which isnt exactly going to come around quickly. Do the belt, idlers, water pump, seals.

I think people forget that the N1 water pump is designed for more track use. If your car is an everyday driver, or spends alot of time driving around the street, then get the pump that came with your car. Go genuine.

I was given an RB30 pump (at least I'm pretty sure thats what it was) by mistake for my 25, and it didnt fit, because of the slotted hole

[Cassbo]

In my first car (R31) I made the mistake of buying a replacement water pump from a wrecker... it leaked just as much as the one that I intended to replace it with... doing a timing belt / water pump twice in the same weekend is not my idea of a good time! The only good thing that I can take from that experience is that when it was time to do the timing belt on my R33 I had learnt my lesson and did it all at the same time with genuine parts (as well as being able to pull it all apart and put it back together fairly efficiently!)

What I didn't learn was how to tension the timing belt correctly, so I'll be doing the whole thing again anyway